Apr. 8, 2025 — The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be explained by a worsening fossil ... Apr. 1, 2025 — More ...

Rare fossil of an ammonite preserved with a distinct mother of pearl iridescence, recently discovered by Dr. Chris Shelton and RSU student Kolby Dooling. A geology professor and his student at ...

Dinosaurs' Apparent Decline Prior to Asteroid May Be Due to Poor Fossil Record Apr. 8, 2025 — The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million ...

To find answers, a team of researchers studied North America’s fossil record, focusing on the 18 million years before the mass extinction at the end of the Cretaceous period. The new analysis ...